The next major language version after Kotlin 1.9 will be Kotlin 2.0. This will include the K2 compiler, a rewrite of the Kotlin compiler optimized for speed, parallelism, and unification (will also allow for new language features).
More details here: https://blog.jetbrains.com/kotlin/2023/02/k2-kotlin-2-0/
We should ensure that the Kotlin driver supports this latest version of Kotlin.